Myrtus communis vs common myrtle

Myrtus communis and common myrtle both are nouns.

Word	Noun	Adjective	Verb	Adverb
Myrtus communis	Yes	No	No	No
common myrtle	Yes	No	No	No

As nouns, Myrtus communis and common myrtle are synonyms defined as:

Myrtus communis and common myrtle: European shrub with white or rosy flowers followed by black berries

Myrtus communis (noun)	common myrtle (noun)
European shrub with white or rosy flowers followed by black berries	European shrub with white or rosy flowers followed by black berries